#include <stdio.h>
int main()
{
	char a=5;
	//00000000000000000000000000000101
	//00000101 - a
	char b=126;
	//00000000000000000000000001111110
	//01111110 - b
	char c=a+b;
	//00000000000000000000000000000101 - a
	//00000000000000000000000001111110 - b
	//00000000000000000000000010000011
	//10000011
	//11111111111111111111111110000011 - 补码
	//11111111111111111111111110000010 - 反码
	//10000000000000000000000001111101
	printf("%d\n",c);//-125
	return 0;
}